i redid my ground today, it looked kind of bad. It seemed to eliminate the problem until I drove with the rear defroster on. It caused similiar things to happen and with it one led to the volume drop with slight throttle. Maybe a new optima battery or check some more connections?
Thanks ya'll
any more ideas would be great!

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'99 SE Duratec with 5spd
DTM muffler (sorry guys)
Resonator removed
3 JL 10W0s driven with Fosgate 500a2
Boston Acoustics RC520 components up front with Boston Coaxial in back driven with RF 400aIV
ST200 wheels still waiting on tires


Mike
Silver '99 SE V6 MTX,
Eibach, Koni, Res removed, Dynamax
B&M, Boston Acoustics, Fosgate, JL, ST200 wheels